<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>参数分类</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card class="box-card">
      <el-alert title="注意：只允许为第三级分类设置参数！" type="warning" show-icon :closable="false"> </el-alert>
      <el-row class="cate_select">
        <el-col>
          <span>请选择商品分类:</span>
          <el-cascader v-model="selectedKeys" :options="cateList" :props="cascadeProps" @change="handleChange" clearable></el-cascader>
        </el-col>
      </el-row>
      <el-tabs v-model="activeName" @tab-click="handleClick">
        <el-tab-pane label="动态参数" name="many">
          <el-button type="primary" size="mini" :disabled="btnDisabled" @click="addDialogVisible = true" >添加参数</el-button>
          <el-table :data="paramsData" border stripe>
            <el-table-column type="expand" label="明细">
              <template slot-scope="scope">
                <el-tag
                  :key="i"
                  v-for="(item,i) in scope.row.attr_vals"
                  closable
                  :disable-transitions="false"
                  @close="handleClose(scope.row,i)">
                  {{item}}
                </el-tag>
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
            </el-table-column>
            <el-table-column type="index" label="序号"></el-table-column>
            <el-table-column prop="attr_name" label="参数名称"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.attr_id)"></el-button>
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParams(scope.row.attr_id)"></el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
        <el-tab-pane label="静态属性" name="only">
          <el-button type="primary" size="mini" :disabled="btnDisabled" @click="addDialogVisible = true">添加属性</el-button>
          <el-table :data="paramsData" border stripe>
            <el-table-column type="expand" label="明细">
              <template slot-scope="scope">
                <el-tag
                  :key="i"
                  v-for="(item,i) in scope.row.attr_vals"
                  closable
                  :disable-transitions="false"
                  @close="handleClose(scope.row,i)">
                  {{item}}
                </el-tag>
                <el-input
                  class="input-new-tag"
                  v-if="scope.row.inputVisible"
                  v-model="scope.row.inputValue"
                  ref="saveTagInput"
                  size="small"
                  @keyup.enter.native="handleInputConfirm(scope.row)"
                  @blur="handleInputConfirm(scope.row)"
                >
                </el-input>
                <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
              </template>
            </el-table-column>
            <el-table-column type="index" label="序号"></el-table-column>
            <el-table-column prop="attr_name" label="属性名称"></el-table-column>
            <el-table-column label="操作">
              <template slot-scope="scope">
                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.attr_id)"></el-button>
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParams(scope.row.attr_id)"></el-button>
              </template>
            </el-table-column>
          </el-table>
        </el-tab-pane>
      </el-tabs>
    </el-card>

    <!-- 添加对话框 -->
    <el-dialog :title="'添加' + title" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
        <el-form-item :label="title" prop="attr_name">
          <el-input v-model="addForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addParams">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改对话框 -->
    <el-dialog :title="'修改' + title" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
        <el-form-item :label="title" prop="attr_name">
          <el-input v-model="editForm.attr_name"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editParams">确 定</el-button>
      </span>
    </el-dialog>    

  </div>
</template>

<script>
export default {
  created() {
    this.getCateList()
  },
  data() {
    return {
      cateList: [],
      selectedKeys: [],
      paramsData: [],
      activeName: 'many',
      cascadeProps: {
        label: 'cat_name',
        value: 'cat_id',
        expandTrigger: 'hover',
      },
      addDialogVisible: false,
      addForm:{},
      addFormRules: {
        attr_name: [{required:true,message:'请输入参数名称',trigger:'blur'}]
      },
      editDialogVisible: false,
      editForm:{},
      editFormRules: {
        attr_name: [{required:true,message:'请输入参数名称',trigger:'blur'}]
      },
      inputVisible: false     
    }
  },
  computed: {
    cateId() {
      return this.selectedKeys.length === 3 ? this.selectedKeys[2] : null
    },
    btnDisabled() {
      return this.selectedKeys.length === 3 ? false : true
    },
    title() {
      return this.activeName == 'many' ? '动态参数' : '静态属性'
    },
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('cate_display/')
      this.cateList = res.data
      console.log('params cate_display res', res.data)
    },
    handleChange() {
      this.getParamsData(),
      this.paramsData = []
    },
    handleClick() {
      console.log('activeName', this.activeName)
      this.getParamsData()
    },
    async getParamsData() {
      if (this.selectedKeys.length !== 3) {
        return (this.selectedKeys = [])
      }
      const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes/`, {
        params: { sel: this.activeName },
      })
      // if (res.meta.status !== 200) {
      //   return this.$message.error('获取商品分类参数失败')
      // }
      res.data = JSON.parse(res.data)
      console.log('getParamsData res', res.data)
      res.data.forEach(item => {
        item.attr_vals = item.attr_vals?item.attr_vals.split(' '):[]
        item.inputVisible = false
        item.inputValue = ''
      })
      this.paramsData = res.data
    },
    async addParams() {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) {
          return
        }
        const { data: res } = await this.$http.post(`categories/${this.cateId}/attributes/`, {
          attr_name: this.addForm.attr_name,
          attr_sel: this.activeName
        })
        // if (res.meta.status !== 201) {
        //   return this.$message.error('创建商品分类失败')
        // }
        console.log('addParams res', res)
        if(res === '没有权限'){
          return this.$message.warning(res)
        }  
        this.addDialogVisible = false
        this.getParamsData()
        this.$message.success('添加参数成功')
      })
    },
  addDialogClosed(){
    this.$refs.addFormRef.resetFields()
  },
  removeParams(id) {
    this.$confirm('确定要删除该参数吗?', '提示', {
      confirmButtonText: '确定',
      cancelButtonText: '取消',
      type: 'warning',
    }).then(async () => {
      const { data: res } = await this.$http.delete(`categories/${this.cateId}/attributes/${id}/`)
      console.log('removeParamsByID res', res)
      if(res === '没有权限'){
        return this.$message.warning(res)
      }              
      // if (res.meta.status !== 200) {
      //   return this.$message.error('删除角色失败')
      // }
      this.getParamsData()
      this.$message.success('删除参数成功')
    })
  },
  async showEditDialog(id) {
    const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes/${id}/`, {
      params: { attr_sel: this.activeName },
    })
    console.log('showEditDialog res', res)
    if(res === '没有权限'){
      return this.$message.warning(res)
    }      
    if (res.meta.status !== 200) {
      return this.$message.error('查询参数信息失败')
    }
    this.editForm = JSON.parse(res.data)
    this.editDialogVisible = true
  },
  // 监听修改对话框的关闭事件
  editDialogClosed() {
    this.$refs.editFormRef.resetFields()
  },
  // 修改参数
  editParams() {
    this.$refs.editFormRef.validate(async (valid) => {
      if (!valid) {
        return
      }
      const { data: res } = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}/`, {
        attr_name: this.editForm.attr_name,
        attr_sel: this.activeName,
        attr_vals: this.editForm.attr_vals,
      })
      if(res === '没有权限'){
        return this.$message.warning(res)
      }  
      // if (res.meta.status !== 200) {
      //   return this.$message.error('修改参数名称失败')
      // }
      this.editDialogVisible = false
      this.getParamsData()
      this.$message.success('修改参数名称成功！')
    })
  },
  handleClose(row,i) {
    row.attr_vals.splice(i,1)
    this.updateParamsDetail(row)
  },

  showInput(row) {
    row.inputVisible = true;
    this.$nextTick(_ => {
      this.$refs.saveTagInput.$refs.input.focus();
    });
  },
  handleInputConfirm(row) {
    if(row.inputValue.trim()) {
      row.attr_vals.push(row.inputValue.trim())
      //更新参数明细
      this.updateParamsDetail(row)
    }
    row.inputVisible = false
    row.inputValue = ''
  },
  //更新参数明细
  async updateParamsDetail(row) {
    const { data: res } = await this.$http.put(`categories/${this.cateId}/attributes/${row.attr_id}/`, {
      attr_name: row.attr_name,
      attr_sel: row.attr_sel,
      attr_vals: row.attr_vals.join(' '),
    })
    if(res === '没有权限'){
      return this.$message.warning(res)
    }  
    // if (res.meta.status !== 200) {
    //   return this.$message.error('修改参数名称失败')
    // }
    // this.getParamsData()
    this.$message.success('更新参数明细成功！')
  },
  },
}
</script>
<style lang="less" scoped>
.cate_select {
  margin-top: 15px;
}
.el-tag {
  margin:5px
}
.input-new-tag{
  width: 120px;
}
</style>